About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanics at the Extremes: Bridging Length-Scales From Nanoscale to Bulk
|
| Presentation Title |
Development of defect modeling capability in shocked metal-on-metal systems |
| Author(s) |
Chelsey Z. Hargather, Kendra Van Buren |
| On-Site Speaker (Planned) |
Chelsey Z. Hargather |
| Abstract Scope |
Los Alamos National Laboratory is interested in defect evolution in metals at high strain rates for production applications. Using the multi-physics Lagrangian code FLAG, macroscopic defects are incorporated into the target on metal-on-metal flyer plate simulations. Findings from the mesh-refinement study and challenges with moving from 1-D to 2-D will be discussed. The importance of modeling choices such as Arbitrary Lagrangian-Eulerian (ALE) strategies will also be examined. Results demonstrate a change in the shock profile when a defect is present on the surface of the target. Effects of changing the size and aspect ratio of the defect will also be investigated and the shock profiles are compared to experimental results when available. Distance-time plots are generated to show the shock propagation through the material and identify the spall planes. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Modeling and Simulation, |